The 38-year-old British actress and her third husband, Ned Rocknroll, welcomed a nine-pound boy into the world at a Sussex, England hospital on Saturday, RadarOnline.com has confirmed.

This is the third child for the Titanic star who has daughter Mia, 13, with ex-hubby Jim Threapleton and son Joe, 9, with her other ex-husband, Sam Mendes.

The Labor Day star previously revealed she had enjoyed her third pregnancy more than the previous two.

She said: “I’ve been more active and healthier. I know more about how to take care of myself now. I think that between 27 and 37 was a big learning decade. I’ve been lucky – a bit tired and a bit sick at the beginning, but nothing major.”

Just 12 of the couple’s friends, including the actress’ Titanic co-star Leonardo DiCaprio – who gave the bride away – were in attendance at the wedding, which took place in a converted barn. Neither set of parents knew about the hush-hush nuptials, according to reports.